Searched refs:subsampling (Results 1 – 14 of 14) sorted by relevance
/linux-6.3-rc2/Documentation/userspace-api/media/v4l/ |
A D | yuv-formats.rst | 26 differences, is called chroma subsampling. 28 While many combinations of subsampling factors in the horizontal and vertical 29 direction are possible, common factors are 1 (no subsampling), 2 and 4, with 30 horizontal subsampling always larger than or equal to vertical subsampling. 33 - `4:4:4`: No subsampling 34 - `4:2:2`: Horizontal subsampling by 2, no vertical subsampling 35 - `4:2:0`: Horizontal subsampling by 2, vertical subsampling by 2 36 - `4:1:1`: Horizontal subsampling by 4, no vertical subsampling 37 - `4:1:0`: Horizontal subsampling by 4, vertical subsampling by 4 59 .. flat-table:: 4:2:2 subsampling, interstitially sited [all …]
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A D | ext-ctrls-jpeg.rst | 26 The chroma subsampling factors describe how each component of an 40 - No chroma subsampling, each pixel has Y, Cr and Cb values.
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A D | pixfmt-m420.rst | 16 M420 is a YUV format with ½ horizontal and vertical chroma subsampling
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A D | pixfmt-yuv-planar.rst | 42 subsampling, the chroma line stride (in bytes) is thus equal to twice the luma 43 line stride. With horizontal subsampling by 2, the chroma line stride is equal 44 to the luma line stride. Vertical subsampling doesn't affect the line stride. 595 formats. The two chroma planes always use the same subsampling. 600 horizontal subsampling factor. Vertical subsampling doesn't affect the line
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A D | pixfmt-packed-yuv.rst | 10 Cr components consecutively in memory. They may apply subsampling to the chroma
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A D | ext-ctrls-codec-stateless.rst | 1755 - Vertical subsampling is enabled. 1758 - Horizontal subsampling is enabled.
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/linux-6.3-rc2/drivers/media/platform/samsung/s5p-jpeg/ |
A D | jpeg-core.c | 537 switch (ctx->subsampling) { in s5p_jpeg_adjust_fourcc_to_subsampling() 593 if (ctx->subsampling > 2) in s5p_jpeg_to_user_subsampling() 595 return ctx->subsampling; in s5p_jpeg_to_user_subsampling() 599 if (ctx->subsampling > 3) in s5p_jpeg_to_user_subsampling() 604 if (ctx->subsampling > 2) in s5p_jpeg_to_user_subsampling() 1078 switch (subsampling) { in s5p_jpeg_subsampling_decode() 1163 subsampling = 0x33; in s5p_jpeg_parse_hdr() 1498 (fmt->subsampling < ctx->subsampling)) { in s5p_jpeg_try_fmt_vid_cap() 2223 ctx->subsampling); in exynos4_jpeg_device_run() 2250 ctx->subsampling); in exynos4_jpeg_device_run() [all …]
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A D | jpeg-core.h | 169 int subsampling; member 231 unsigned short subsampling; member
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/linux-6.3-rc2/drivers/media/platform/renesas/ |
A D | rcar_jpu.c | 229 unsigned char subsampling; member 249 u8 subsampling; member 1082 u8 subsampling = jpu_parse_hdr(buffer, buf_size, &width, in jpu_buf_queue() local 1086 if (subsampling != JPU_JPEG_422 && subsampling != JPU_JPEG_420) in jpu_buf_queue() 1106 jpu_buf->subsampling = subsampling; in jpu_buf_queue() 1142 *(buffer + JPU_JPEG_SUBS_OFFSET) = q_data->fmtinfo->subsampling; in jpu_buf_finish() 1353 unsigned char num_planes, subsampling; in jpu_device_run() local 1381 subsampling = q_data->fmtinfo->subsampling; in jpu_device_run() 1398 if (subsampling == JPU_JPEG_420) { in jpu_device_run() 1445 if (jpu_buf->subsampling != subsampling) { in jpu_device_run()
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/linux-6.3-rc2/drivers/media/platform/nxp/imx-jpeg/ |
A D | mxc-jpeg.c | 70 .subsampling = -1, 79 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444, 93 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444, 107 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420, 120 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_420, 133 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_422, 146 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_444, 159 .subsampling = V4L2_JPEG_CHROMA_SUBSAMPLING_GRAY, 1026 if (mxc_formats[i].subsampling == fmt->subsampling && in mxc_jpeg_get_sibling_format() 1404 if (fmt->subsampling != header->frame.subsampling || in mxc_jpeg_match_image_format() [all …]
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A D | mxc-jpeg.h | 59 enum v4l2_jpeg_chroma_subsampling subsampling; member
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/linux-6.3-rc2/include/media/ |
A D | v4l2-jpeg.h | 62 enum v4l2_jpeg_chroma_subsampling subsampling; member
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/linux-6.3-rc2/drivers/media/platform/chips-media/ |
A D | coda-jpeg.c | 396 switch (header.frame.subsampling) { in coda_jpeg_decode_header() 399 ctx->params.jpeg_chroma_subsampling = header.frame.subsampling; in coda_jpeg_decode_header() 403 header.frame.subsampling); in coda_jpeg_decode_header() 955 static unsigned char subsampling[5][3] = { in coda9_jpeg_encode_header() local 967 ret = coda_jpeg_put_byte(subsampling[chroma_format][i], in coda9_jpeg_encode_header()
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/linux-6.3-rc2/drivers/media/v4l2-core/ |
A D | v4l2-jpeg.c | 227 frame_header->subsampling = subs; in jpeg_parse_frame_header()
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